ABB REC 561 User Manual page 392

ABB Network Partner AB
Version 1.0-00
3.2.2 Bus coupler for
double and transfer
busbars, ABC_BC
3.2.3 Transformer bay for
double busbars,
AB_TRAFO
Interlocking
ABC_BC contains the interlocking for a bus-coupler bay that is connected
to a double busbar configuration and a bypass bus. This module is also
used for single busbar with bypass bus or double busbar without bypass
busbar.
Q1 Q20
Q51
Q0
Fig. 4 Switchyard layout ABC_BC
AB_TRAFO contains the interlocking for a transformer bay that is con-
nected to a double busbar configuration.This module is used if there is no
disconnector between circuit breaker and transformer. Otherwise, the
module ABC_LINE can be used. For safety reasons, the module assumes
that the other side of the transformer is not interlocked. This module is
also used for single busbar configuration.
Q1 Q2
Q51
Q0
Q52
T
TQ51
TQ0
TQ52
TQ1 TQ2
Fig. 5 Switchyard layout AB_TRAFO
Q2 Q7
Module
ABC_BC
Q52
Module
AB_TRAFO
TQ0 and TQ52 are not used in interlocking
1MRK 580 151-XEN
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A (BB1)
B (BB2)
C (TB)
Q15 Q25 Q75
(X80151-4)
A (BB1)
B (BB2)
Q15 Q25
(X80151-5)